Home / 10,128.57-15,187.59-4,579.26

Finding the Fourth Proportional to 10,128.57, 15,187.59 and 4,579.26

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Solution

The fourth proportional to 10,128.57, 15,187.59 and 4,579.26 is: 6,866.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.57 : 15,187.59 = 4,579.26 : x
  2. Step 2: Convert to fraction form
    10,128.57/15,187.59 = 4,579.26/x
  3. Step 3: Cross multiply
    10,128.57x = 15,187.59 × 4,579.26
  4. Step 4: Simplify right side
    10,128.57x = 69,547,923.38
  5. Step 5: Solve for x
    x = 69,547,923.38/10,128.57
  6. Step 6: Final answer
    x = 6,866.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.